We must remember that Pearl Harbor was more than a mere attack. At
> that time the Japanese were officially engaged in peace negotiations
> with the U.S. When one is negotiating, one does not make war. The
> Japanese diplomatic in the U.S. did not break off diplomatic until well
> after the attack -- which he didn't even know about. That was act of
> sleaziness by the Japanese government.
No, it was not "sleaziness".
The Japanese government fully intended to stop the peace negotiations before the attack occured, but the diplomatic staff at the Japanese emabssy was too slow decoding the message sent from Japan.
And it's a diplomat's job to do whatever his government tells him to, regardless of whether or not he knows its intentions in advance.